DEBIAN-CVE-2021-33574

Advisory lineage Upstream: 1 Downstream: 1
Upstream
CVE-2021-33574
Downstream
DLA-3152-1
Published: 25 May 2021, 22:15
Last modified:28 Apr 2026, 20:22

Vulnerability Summary

Overall Risk (default)
high
70/100
CVSS Score
9.8 CRITICAL
3.1 (osv_debian)
EPSS Score
No data
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

25 May 2021, 22:15
Published
Vulnerability first disclosed
28 Apr 2026, 20:22
Last Modified
Vulnerability information updated

Description

The mq_notify function in the GNU C Library (aka glibc) versions 2.32 and 2.33 has a use-after-free. It may use the notification thread attributes object (passed through its struct sigevent parameter) after it has been freed by the caller, leading to a denial of service (application crash) or possibly unspecified other impact.

CVSS Metrics

  • v3.1•CRITICAL•Score: 9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected Systems

  • debian•glibc

    < 2.31-13+deb11u3 | < 2.32-1 | < 2.32-1 | < 2.32-1

References (1)